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This thread is locked; no one can reply to it.
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| Problems with ttf and font addons |
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felipe fujioa
Member #12,695
March 2011
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Hi, i'm new to allegro 5 and i'm having some problems to add text to my program. There is the part of mt code that is using the allegro addons: 1#include <allegro5/allegro.h>
2#include <allegro5/allegro_font.h>
3#include <allegro5/allegro_ttf.h>
4
5...
6int main(void){
7al_init();
8...
9ALLEGRO_FONT *font = NULL;
10
11 al_init_font_addon(); // initialize the font addon
12 al_init_ttf_addon();
13
14 font = al_load_ttf_font("automati.ttf",72,0 );
15
16...
17}
when i compile it returns this weird mistakes: 1/home/aural/Desktop/JUN/Wiimba_1.0/wmdemo/Wiimba_03.c:601: undefined reference to `al_init_font_addon'
2/home/aural/Desktop/JUN/Wiimba_1.0/wmdemo/Wiimba_03.c:602: undefined reference to `al_init_ttf_addon'
3/home/aural/Desktop/JUN/Wiimba_1.0/wmdemo/Wiimba_03.c:604: undefined reference to `al_load_ttf_font'
Ive already done some programs with allegro5, but qhen i tried the addons it did not compiled. I looked into the libraries of the allegro folder, but did not find any reference to the allegro_ttf.h. Do i have to download it separately? Could someone help me? |
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jmasterx
Member #11,410
October 2009
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You might be missing FreeType or another dependency, what did cmake say you were missing? Agui GUI API -> https://github.com/jmasterx/Agui |
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Matthew Leverton
Supreme Loser
January 1999
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You need to link with the addon libraries. |
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felipe fujioa
Member #12,695
March 2011
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i think i partially solved the problem. I linked the libraries, but now the gcc accuses a lot of error in the allegro_font.h. for example: 1...
2allegro_font.h:59: error: ‘font_height’ has not been declared
3allegro_font.h:59: error: expected identifier before ‘(’ token
4allegro_font.h:59: error: ISO C++ forbids declaration of ‘AL_METHOD’ with no type
5allegro_font.h:60: error: ‘font_ascent’ has not been declared
6...
someone know what is wrong? |
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Thomas Fjellstrom
Member #476
June 2000
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You just need to link to the addon libraries, similar to how you link to the allegro library itself. -- |
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felipe fujioa
Member #12,695
March 2011
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Well, i linked it. But the strange problems i said before happened. |
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Thomas Fjellstrom
Member #476
June 2000
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Are you including allegro_font.h before or after allegro5.h? -- |
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felipe fujioa
Member #12,695
March 2011
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after, does it make any diference? from my make file LIB = serial.c CreateControl.c Getch.c CreateMath.c LibGa.c allegro5.h allegro.h allegro_font.h allegro_ttf.h font.h but the compiler is accusing errors in the library. =/ |
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Thomas Fjellstrom
Member #476
June 2000
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felipe fujioa said: LIB = serial.c CreateControl.c Getch.c CreateMath.c LibGa.c allegro5.h allegro.h allegro_font.h allegro_ttf.h font.h Don't do that. You don't want to compile headers. You need to #include <headernamehere> them in your source (.c) files. -- |
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felipe fujioa
Member #12,695
March 2011
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I'm including the libraries on my ~.c file, and they are after allegro5.h. but when i try to compile gcc accuses al_init_font_addon() and al_init_ttf_addon() not to be defined. |
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Thomas Fjellstrom
Member #476
June 2000
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felipe fujioa said: ut when i try to compile gcc accuses al_init_font_addon() and al_init_ttf_addon() not to be defined. Please show how you're compiling, and your source file that uses those functions. -- |
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felipe fujioa
Member #12,695
March 2011
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This is the part of the code i'm trying to use allegro font and ttf addons. 1#include <stdio.h>
2...
3#include <allegro5/allegro.h>
4#include <allegro5/allegro5.h>
5#include <allegro5/allegro_font.h>
6#include <allegro5/allegro_ttf.h>
7...
8int posx1 = 200;
9 int posy1 = 200;
10 int posx2 = 200;
11 int posy2 = 200;
12 int BOUNCER_SIZE = 10;
13 int FPS = 60;
14
15 bool key[4] = { false, false, false, false };
16 bool doexit = false;
17
18 ALLEGRO_DISPLAY *display = NULL;
19 ALLEGRO_BITMAP *bouncer = NULL;
20 ALLEGRO_BITMAP *bouncer2 = NULL;
21 ALLEGRO_EVENT_QUEUE *event_queue = NULL;
22 ALLEGRO_TIMER *timer = NULL;
23 ALLEGRO_FONT *font = NULL;
24
25 al_init_font_addon(); // initialize the font addon
26 al_init_ttf_addon();
27
28 font = al_load_ttf_font("automati.ttf",72,0 );
29
30 if(!al_init()) {
31 fprintf(stderr, "failed to initialize allegro!\n");
32 return -1;
33 }
34
35 timer = al_create_timer(1.0 / FPS);
36 if(!timer) {
37 fprintf(stderr, "failed to create timer!\n");
38 return -1;
39 }
40
41 if(!al_install_keyboard()) {
42 fprintf(stderr, "failed to initialize the keyboard!\n");
43 return -1;
44 }
45
46 display = al_create_display(1024, 512);
47 if(!display) {
48 fprintf(stderr, "failed to create display!\n");
49 return -1;
50 }
51
52 bouncer = al_create_bitmap(BOUNCER_SIZE, BOUNCER_SIZE);
53 if(!bouncer) {
54 fprintf(stderr, "failed to create bouncer bitmap!\n");
55 al_destroy_display(display);
56 return -1;
57 }
58
59 bouncer2 = al_create_bitmap(BOUNCER_SIZE, BOUNCER_SIZE);
60 if(!bouncer2) {
61 fprintf(stderr, "failed to create bouncer bitmap!\n");
62 al_destroy_display(display);
63 return -1;
64 }
65
66 event_queue = al_create_event_queue();
67 if(!event_queue) {
68 fprintf(stderr, "failed to create event_queue!\n");
69 al_destroy_bitmap(bouncer);
70 al_destroy_display(display);
71 al_destroy_timer(timer);
72 return -1;
73 }
74
75
76 al_set_target_bitmap(bouncer);
77
78 al_clear_to_color(al_map_rgb(255,0,255));
79
80 al_set_target_bitmap(bouncer2);
81
82 al_clear_to_color(al_map_rgb(0,255,255));
83
84 al_set_target_bitmap(al_get_backbuffer(display));
85
86 al_register_event_source(event_queue, al_get_display_event_source(display));
87
88 al_register_event_source(event_queue, al_get_timer_event_source(timer));
89
90 al_register_event_source(event_queue, al_get_keyboard_event_source());
91
92
93 al_start_timer(timer);
94
95
96 while(!doexit){
97
98 ALLEGRO_EVENT ev;
99 al_wait_for_event(event_queue, &ev);
100
101 if (cwiid_get_state(wiimote, &state)) { //Atualiza estado
102 fprintf(stderr, "Error getting state\n");
103 }
104 botao = button_state(&state);
105
106
107 for (i = 0; i < CWIID_IR_SRC_COUNT; i++) { //CWIID_IR_SRC_COUNT guarda a quantidade de pontos(IR) validos encontrados pelo controle
108 if (state.ir_src[i].valid) { //verifica a validade do ponto
109 valid_source = 1;
110 posx1 = state.ir_src[0].pos[CWIID_X];
111 posy1 = state.ir_src[0].pos[CWIID_Y];
112 posx2 = state.ir_src[1].pos[CWIID_X];
113 posy2 = state.ir_src[1].pos[CWIID_Y];
114
115 }
116 }
117
118 if(ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
119 break;
120 }else if(ev.type == ALLEGRO_EVENT_KEY_DOWN) {
121 switch(ev.keyboard.keycode) {
122 case ALLEGRO_KEY_UP:
123 key[KEY_UP] = true;
124 break;
125
126 case ALLEGRO_KEY_DOWN:
127 key[KEY_DOWN] = true;
128 break;
129
130 case ALLEGRO_KEY_LEFT:
131 key[KEY_LEFT] = true;
132 break;
133
134 case ALLEGRO_KEY_RIGHT:
135 key[KEY_RIGHT] = true;
136 break;
137 }
138 }
139 else if(ev.type == ALLEGRO_EVENT_KEY_UP) {
140 switch(ev.keyboard.keycode) {
141 case ALLEGRO_KEY_UP:
142 key[KEY_UP] = false;
143 break;
144
145 case ALLEGRO_KEY_DOWN:
146 key[KEY_DOWN] = false;
147 break;
148
149 case ALLEGRO_KEY_LEFT:
150 key[KEY_LEFT] = false;
151 break;
152
153 case ALLEGRO_KEY_RIGHT:
154 key[KEY_RIGHT] = false;
155 break;
156
157 case ALLEGRO_KEY_ESCAPE:
158 doexit = true;
159 break;
160 }
161 }
162
163
164 if(key[KEY_UP])
165 al_clear_to_color(al_map_rgb(0,0,0));
166
167 al_draw_bitmap(bouncer, posx1, posy1, 0);
168
169 al_draw_bitmap(bouncer, posx2, posy2, 0);
170
171 al_flip_display();
172
173
174 }
175
176
177 al_destroy_display(display);
178
179
180
181
182 if(botao & bHome) exit = 0;
this is my Makefile. 1
2include defs.mak
3
4CXX = g++
5
6LIB = serial.c CreateControl.c Getch.c CreateMath.c LibGa.c allegro5.h allegro.h
7
8CFLAGS += -I../libcwiid -g -Wall -I/addons/font -I/addons/ttf
9LDFLAGS += -L../libcwiid -L/addons/font -L/addons/ttf
10LDLIBS += -lcwiid
11INST_DIR = ${exec_prefix}/bin
12
13
14Wiimba: Wiimba_03.o
15 $(CXX) $(CFLAGS) $(LDLIBS) $(LIB) -o $@ $< -lgcc -lm -lncurses `pkg-config --libs allegro-5.0`
16
17Wiimba_03.o: Wiimba_03.c
18 $(CXX) $(CFLAGS) -c -o $@ $<
19
20
21
22
23
24clean: clean
25 rm Wiimba
26
27.PHONY: distclean
and the error is that the compiler do not find the definitions to al_init_font_addon; al_init_ttf addon and al_load_ttf_font("automati.ttf",72,0 ). the full compiling log 1
2g++ -g -Wall -W -DHAVE_CONFIG_H -I../common/include -I../libcwiid -g -Wall -I/addons/font -I/addons/ttf -c -o Wiimba_03.o Wiimba_03.c
3Wiimba_03.c:334:4: warning: "/*" within comment
4Wiimba_03.c: In function ‘int main(int, char**)’:
5Wiimba_03.c:785: warning: suggest parentheses around assignment used as truth value
6Wiimba_03.c:285: warning: unused variable ‘mesg’
7Wiimba_03.c:288: warning: unused variable ‘rumble’
8Wiimba_03.c: At global scope:
9Wiimba_03.c:1054: warning: unused parameter ‘timestamp’
10g++ -g -Wall -W -DHAVE_CONFIG_H -I../common/include -I../libcwiid -g -Wall -I/addons/font -I/addons/ttf -lcwiid serial.c CreateControl.c Getch.c CreateMath.c LibGa.c allegro5.h allegro.h -o Wiimba Wiimba_03.o -lgcc -lm -lncurses `pkg-config --libs allegro-5.0`
11Wiimba_03.o: In function `main':
12/home/aural/Desktop/JUN/Wiimba_1.1/wmdemo/Wiimba_03.c:602: undefined reference to `al_init_font_addon'
13/home/aural/Desktop/JUN/Wiimba_1.1/wmdemo/Wiimba_03.c:603: undefined reference to `al_init_ttf_addon'
14/home/aural/Desktop/JUN/Wiimba_1.1/wmdemo/Wiimba_03.c:605: undefined reference to `al_load_ttf_font'
15collect2: ld returned 1 exit status
16make: *** [Wiimba] Error 1
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Arthur Kalliokoski
Second in Command
February 2005
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Try: `pkg-config --libs allegro-5.0 allegro_ttf-5.0` If that's not enough: (from one of my makefiles) `pkg-config --libs allegro-5.0 allegro_ttf-5.0 allegro_image-5.0 allegro_primitives-5.0`
They all watch too much MSNBC... they get ideas. |
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Evert
Member #794
November 2000
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felipe fujioa said: g++ -g -Wall -W -DHAVE_CONFIG_H -I../common/include -I../libcwiid -g -Wall -I/addons/font -I/addons/ttf -lcwiid serial.c CreateControl.c Getch.c CreateMath.c LibGa.c allegro5.h allegro.h -o Wiimba Wiimba_03.o -lgcc -lm -lncurses `pkg-config --libs allegro-5.0` Don't link with header files. You #include them in your source code to make declarations in them visible to functions within that source file. As pointed out here. |
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felipe fujioa
Member #12,695
March 2011
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Thank you, the Arthur Kalliokoski's solution worked. Perhaps, i'm having problems to load a ttf file. The ttf is in the same directory as my ~.c file and executable. But when it try to load, it gets a segfault. Just to have my font file in the same directory should work? Or i have to do any configuration, or add any library? =) |
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Arthur Kalliokoski
Second in Command
February 2005
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This should help They all watch too much MSNBC... they get ideas. |
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felipe fujioa
Member #12,695
March 2011
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Thx, but my ttf file is not even loading. It get a seg fault and returns nothing. |
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Arthur Kalliokoski
Second in Command
February 2005
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In other words, you're already doing font = al_load_ttf_font("automati.ttf",72,0 ); if(!font) { some_error_msg(); exit(1); } I've had it crash so bad it locked up the entire machine if the font was big enough with a point size 200+. (?) It was crashing the display driver. They all watch too much MSNBC... they get ideas. |
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felipe fujioa
Member #12,695
March 2011
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Yes, i've already done that. but when i reach the part of the code that uses the ttf loading, it Segfaults =\ Could it be a problem with the *.ttf font? Any ideas? I've tried this as well: 1
2ALLEGRO_PATH *p = al_get_standard_path(ALLEGRO_RESOURCES_PATH);
3
4 const char *c = al_path_cstr(p, ALLEGRO_NATIVE_PATH_SEP );
5
6 al_change_directory("/home/jun/Desktop/CTI/Wiimba_1.1/wmdemo");
7
8 font = al_load_ttf_font("/home/jun/Desktop/CTI/Wiimba_1.1/wmdemo/automati.ttf",30, 0 );
and got: 1
2Wiimba: /home/jun/Downloads/allegro-5.0.0/src/system.c:346: al_get_standard_path: Assertion `active_sysdrv' failed.
3
i'm using ubuntu 10.10. Thx |
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